Adjustable hinged spanner wrench



Mar. 3. 1925.

A. C. PRICE ET AL ADJUSTABLE HINQED SPANNER WRENCH Filed Dec. 4:, 1923 INVENTOR JZZvert O. Pride/e, .filtexn/ .1 Thompson? ATTORNEYS Patented Mar. 3, 1925.

UNITED STATES v 1,528,691 PATENT "OFFICE.

ALBERT C. PRICE AND ALLEN J. THOMPSON, F GOLWYNE, PENNSYLVANIA.

ADJUSTABLE HINGED SPANNER WRENCH.

Application filed December 4, 1923.

Y '0 all whom it may concern:

Be it known that we, ALBERT C. PRICE and ALLEN J THOMPSON, citizens of the United States, residing at Colwyne, in the county of Delaware and State of Pennsylvania, have invented certain new and useful Improvements in Adjustable Hinged Spanner \Vrenches, of which the following is a specification.

Our invention relates to improvements in wrenches, and it consists in the constructions, combinations, and arrangements herein described and claimed.

An object of the invention is to provide a spanner wrench adapted particularly for turning round nuts.

A further object of the invention is to provide a spanner wrench for the purpose described which is both adjustable to take different sizes of nuts, and reversible so that the nuts may be either turned on or off.

Other objects and advantages will appear in the following specification, reference being had to the accompanying drawing, in which:

Figure 1 is a perspective view illustrating the adjustable spanner wrench in use,

Figure 2 is a plan view,

Figure 3 is a perspective view of the c0mbined key and pin which is used in connection with the chain,

Figure 4 is a detail perspective View of the pawl,

Figure 5 is a perspective view of the nut which the wrench is intended to manipulate.

In carrying out the invention provision is made of a lever 1 which terminates in a handle 2 so that the lever may be readily grasped and turned. One side of the lever has a plurality of recesses 3 into any one of which the pin 4; of the pawl 5 may be fitted for the purpose of adjustment. The pawl 5 terminates in a hook end or dog 6 so that the links 7 of a chain 8 may be engaged to produce a grip onthe nut 9 which it is intended to either apply or remove. The pawl includes a bifurcated portion or yoke 9 which fits around the lever 1 and serves to hold the pawl in place thereon.

Pivoted at 10 to the last pair of outside links of the chain 8 is a block 11 which has a pin 12 on one side and a key 13 on the other. The pin is intended to fit into any one of a plurality of holes 14 in the nut 9. The key 13 is intended to fit any one of a plurality of slots 15 in the nut, but of neces- Serial No. 678,491.

sity the block 11 must be reversed in respect to the chain 8 before this can be accomplished.

The nut 9" is circular as clearly shown in Figures 1, 2 and 5. In this respect it is different from the ordinary square or hex agonal nuts. It is threaded at 16 on the inside according to custom. This particular nut is designed for use on such classes of mechanism where the ordinary nuts are unsuitable. The spanner wrench, in turn, is designed to remove or apply this particular kind of nut.

The. operation may be readily understood from the foregoing description. Assume the spindle S to be a part of such mechanism to which the circular nut 9 is particularly adapted. Upon desiring to screw the nut down on the spindle the wrench is applied, as shown. The pin 12 is inserted in a convenient one of the holes 14. The lever 1 is laid against the opposite side of the nut. The chain is looped around the nut and over the lever so that the hook end or dog 6 may be engaged with the nearest one of the links 7.

It is easy to see that an exertion toward the left will cause the screwing down of the nut. Should it be desired to unscrew the nut, the position of the wrench must be reversed. The provision of slots 15 and the complementary key 13 on the block 11 is merely a matter of convenience. Either the pin 12 or key 13 may be used to obtain a grip on the nut, this depending on whether a hole or slot is nearest. Again, circmn stances may arise where the grip afforded by the key is regarded as more substantial, and in such case the key is used. The

wrench may be made to accommodate various sizes of nuts by adjusting the pawl 5 both in respect to the lever 1 and to the chain 8.

While the construction and arrangement of the improved spanner wrench as herein described and claimed is that of a generally preferred form, obviously modifications and changes may be made without departing from the spirit of the invention or the scope of the claims.

We claim: a

1. A wrench comprising a chain, anchoring means at one end by which the chain is fastened to a nut or the like, a lever in respect to which the other end of the chain is fastened said lever being applied to the side of the nut substantially opposite the ancho the lever having a plurality 0f-p1"e cesses; and a pawl carried by the 1ever l1aving a pin to fit in a desired one of the recesses and engaginga suitable -1ink of-the chain to secure a grip on the nut.

2. A spanner Wrench comprising a lever having a handle and a plurality oji recesses,

a pawl having a hook end and a yoke which s i onnd he v r a Pi e e e he yokev to fitany onerofithe recesses, a loose chain with one end of whichthehpok end. of the pawl is engageable, and a block pivotally carried by the other extremity of the chain having a pin and a key to engage either the hgles or slpts ot a cil cular nut to be manipulatedby the Wrench.

ALBERT 0. PRICE. ALLEN J, THOMPSON. 

